Clinical Trial

Novel Stress Testing Protocol

Study Description

Development of a Novel Stress Testing Protocol to Define the Relationship Between Coronary Microvascular Dysfunction and Diastology in Women With Angina But No Evidence of Obstructive Coronary Artery Disease

Microvascular coronary dysfunction (MCD) (abnormities in small blood vessels/arteries in heart) with symptoms of persistent chest pain, primarily impacts women. There are an estimated 2-3 million women in the US with MCD and about 100,000 new cases annually. Recent data from our research group suggests that coronary microvascular disease impairs the way the heart relaxes. This pilot study will attempt to exacerbate this phenotype in an effort to better understand the pathophysiology of the disease. The investigators will recruit 30 volunteers total (10 healthy calibration subjects, 10 women with microvascular disease, and 10 age-match women for the group with microvascular disease). Subjects will undergo a series of "stress" maneuvers in conjunction with advanced cardiac magnetic resonance imaging.

Location

Locations Selected Location

Methods

No pharmaceutical medication involved No pharmaceutical medication involved
Patients and healthy individuals accepted Patients and healthy individuals accepted

Handgrip

Subjects will be asked to squeeze and handgrip dynamometer to increase cardiac metabolic demand

Altitude simulation

Subjects will breathe a lower concentration of oxygen to simulate the effects of altitude.

Leg exercise

Subjects will perform leg exercise to increase metabolic demand.

Additional Information

Official Study Title

DEVELOPMENT OF A NOVEL STRESS TESTING PROTOCOL TO DEFINE THE RELATIONSHIP BETWEEN CORONARY MICROVASCULAR DYSFUNCTION AND DIASTOLOGY IN WOMEN WITH ANGINA BUT NO EVIDENCE OF OBSTRUCTIVE CORONARY ARTERY DISEASE

Clinical Trial ID

NCT02301663

ParticipAid ID

vbm2Ed